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bignum.c: explicit casts

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* bignum.c (int_pow_tmp2): explicitly cast to get rid of implicit
  conversion.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61012 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-12-04 10:41:45 +00:00
parent 4788522fa6
commit b91d5b7958
1 changed files with 10 additions and 12 deletions
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22
bignum.c
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@ -6994,38 +6994,36 @@ int_pow_tmp2(VALUE x, VALUE y, long mm, int nega_flg)
#ifdef DLONG
DLONG const mmm = mm;
long xx = FIX2LONG(x);
# define MUL_MODULO(a, b, c) (long)(((DLONG)(a) * (DLONG)(b)) % (c))
for (/*NOP*/; ! FIXNUM_P(y); y = rb_funcall(y, idGTGT, 1, LONG2FIX(1L))) {
if (RTEST(rb_int_odd_p(y))) {
tmp = ((DLONG)tmp * (DLONG)xx) % mmm;
tmp = MUL_MODULO(tmp, xx, mmm);
}
xx = ((DLONG)xx * (DLONG)xx) % mmm;
xx = MUL_MODULO(xx, xx, mmm);
}
for (yy = FIX2LONG(y); yy; yy >>= 1L) {
if (yy & 1L) {
tmp = ((DLONG)tmp * (DLONG)xx) % mmm;
tmp = MUL_MODULO(tmp, xx, mmm);
}
xx = ((DLONG)xx * (DLONG)xx) % mmm;
xx = MUL_MODULO(xx, xx, mmm);
}
#else
VALUE const m = LONG2FIX(mm);
VALUE tmp2 = LONG2FIX(tmp);
# define MUL_MODULO(a, b, c) rb_int_modulo(rb_fix_mul_fix((a), (b)), (c))
for (/*NOP*/; ! FIXNUM_P(y); y = rb_funcall(y, idGTGT, 1, LONG2FIX(1L))) {
if (RTEST(rb_int_odd_p(y))) {
tmp2 = rb_fix_mul_fix(tmp2, x);
tmp2 = rb_int_modulo(tmp2, m);
tmp2 = MUL_MODULO(tmp2, x, m);
}
x = rb_fix_mul_fix(x, x);
x = rb_int_modulo(x, m);
x = MUL_MODULO(x, x, m);
}
for (yy = FIX2LONG(y); yy; yy >>= 1L) {
if (yy & 1L) {
tmp2 = rb_fix_mul_fix(tmp2, x);
tmp2 = rb_int_modulo(tmp2, m);
tmp2 = MUL_MODULO(tmp2, x, m);
}
x = rb_fix_mul_fix(x, x);
x = rb_int_modulo(x, m);
x = MUL_MODULO(x, x, m);
}
tmp = FIX2LONG(tmp2);